如何打开图库以选择多个图像？

Question

我想打开具有多个图像选择功能的图库，我正在使用以下代码。

        Intent intent = new Intent();
        intent.setType("image/*");
        intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
        intent.setAction(Intent.ACTION_GET_CONTENT);
        startActivityForResult(Intent.createChooser(intent,"Select Picture"), 1);

它打开图库应用程序，但不允许我选择多个图像。

Answer 1

这对我从 api22 到 api29 都有效。

Intent intent = new Intent();
                intent.setType("image/*");
                intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
                intent.setAction(Intent.ACTION_GET_CONTENT);
                intent.setData(MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
                startActivityForResult(intent, 105);

然后在活动结果超方法中添加此代码。

if (resultCode == RESULT_OK && requestCode == 105) {
            ClipData clipData = data.getClipData();
            if (clipData != null) {
                for (int i = 0; i < clipData.getItemCount(); i++) {
                    Uri imageUri = clipData.getItemAt(i).getUri();
                    // your code for multiple image selection
                }
            } else {
              Uri uri = data.getData();
                // your codefor single image selection
            }

注意：在您获得图库屏幕后，将图像保持一段时间。然后在右上角单击“打开”。它将允许您选择多个图像。

Answer 2

单击并按住可选择多个图像。不要只点击图像。您也可以使用它接收这些图像。

int PICK_IMAGE_MULTIPLE = 1;
String imageEncoded;
List<String> imagesEncodedList;

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    try {
        // When an Image is picked
        if (requestCode == 1 && resultCode == RESULT_OK
                && null != data) {
            // Get the Image from data

            String[] filePathColumn = { MediaStore.Images.Media.DATA };
            imagesEncodedList = new ArrayList<String>();
            if(data.getData()!=null){

                Uri mImageUri=data.getData();

                // Get the cursor
                Cursor cursor = getContentResolver().query(mImageUri,
                        filePathColumn, null, null, null);
                // Move to first row
                cursor.moveToFirst();

                int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
                imageEncoded  = cursor.getString(columnIndex);
                cursor.close();

            }else {
                if (data.getClipData() != null) {
                    ClipData mClipData = data.getClipData();
                    ArrayList<Uri> mArrayUri = new ArrayList<Uri>();
                    for (int i = 0; i < mClipData.getItemCount(); i++) {

                        ClipData.Item item = mClipData.getItemAt(i);
                        Uri uri = item.getUri();
                        mArrayUri.add(uri);
                        // Get the cursor
                        Cursor cursor = getContentResolver().query(uri, filePathColumn, null, null, null);
                        // Move to first row
                        cursor.moveToFirst();

                        int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
                        imageEncoded  = cursor.getString(columnIndex);
                        imagesEncodedList.add(imageEncoded);
                        cursor.close();

                    }
                    Log.v("LOG_TAG", "Selected Images" + mArrayUri.size());
                }
            }
        } else {
            Toast.makeText(this, "You haven't picked Image",
                    Toast.LENGTH_LONG).show();
        }
    } catch (Exception e) {
        Toast.makeText(this, "Something went wrong", Toast.LENGTH_LONG)
                .show();
    }

    super.onActivityResult(requestCode, resultCode, data);
}